Automobile brake



"Feb. 19, 1924. 1,484,316 v I J. W'. BAILEY I AUTOMOBILE BRAKE Filed Feb. 14 1921 ATTORNEY Patented Fee. 19, ieze.

JOHN w. BAILEY, or SEATTLE, wasnrneron, ASSIGNOR TQIBAILEYBRAKE ed, on

SEATTLE, wAsHIneTon, A con-renames: OF WASHINGTON.

AUTOMOBILE BRAKE.

' Application filed 'icbruary it, 1921. Serial no. 444,661; r

Y '0 all whom it may concern:

Be it known that 1, JOHN ,W. BAILEY, a citizen of the United States, residing at Seattle, in the county of King and State of Washington, have invented certain new and useful Improvements in Automobile Brakes, of which the following is a specification.

This invention relates to. wheel-brakes for automobiles.

The object'of my invention is the perfecting of devices of this character and, more especially, the braking appliances of the type whereina circular flange portion of the axle housing extends into a drum rigidly secured to. oneof the rear wheelsto render the same more efiicient and convenient to operate.

The invention consists in the novel con struction, adaptation and combination of parts hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a fragmentary front elevational view of a portion of an automobile wheel and axle assembly, with an embodiment of my invention applied thereto; Fig. 2 is a plan view of the same, shown partly in horizontal section. Figs. 3 and 4: are sectional views through 33 and 4- -4 of Fig. 2. Fig. 5 is a perspective view of the pivotal support for the rocker arm member. 6 is a similar view of the brake-band supporting bar.

In said drawings, the reference numeral 10 represents a portion of an automobile traction wheel having an axle 11 extending through a housing 12.' Said housing is provided adjacent tosaid wheel with a circular flange 13 extending into a drum 14: which is rigidly secured to the wheel; All of the above referred to parts are or may be similar to parts now inuse in braking appliances of this general type;

According to the present invention, to the periphery of the drum it I preferably secure a ring 15 to afford relatively large frictional area. Secured, as by bolts 16, to the housing flange 13 is a bracket bar 17 of substantially the form shown in Figs. 3 and 6 and of a length greater than the diameter of the drum ring 15.

Protruding laterally from the respective ends of said bar isa studl8 and a shelf element 19, the same being located at diametrically opposite sides of the ring 15, or

nearly so. The bar stud 18 extends into a Fig.

loop shaped attachment 20 of a brake-band 21 to support the latter at about its midlength. v

22 represents a spring positioned within the attac-hment20 and actsagainst the Stud 18 to yieldingly retain the brake-band lining 23 out of contact with the drum element 15 subject to anadjustment screw 24.

One end of the brake-band is formed with I a loop 25 to receivea pin 26 for connecting the same to the arm 27 r of a bell-crank lever which is connected by a pin 28 (Fig. 4) to the bifurcated lower end of a screw threaded rod 29. The rod 29 extends upwardly through a guide slot 30 (Fig. 6) provided in the shelf element '19 ofthe bar 17 and also through an apertured lug 31 secured to Iand constituting an extension for the other end of the brake-band. i

A. nut, or'nuts, 32" engaging the rod 29 above said lug prevents the withdrawal of the rod from the latter. The slotted shelf 19 of the bar 17 not only serves as agguide for the rod 29, but also servesas a support for a helical spring 33 which tends. to.disengage the brake-band from the brake drum.

A nut 34:: taking the thread of the rod 29 and engageable against the underside of the shelf 19 is advantageously employed to regulate the positions of the Fbrake-band ends with respect to each other and to the drum. Theotherarm 27 of said'lever is connected by a link 35 with an arm 36 extending upwardly from a sleeve 37 which is mounted for-oscillatory movements upon; 7

an arbor 38.

One end of the arbor 38 is provided with Y a screwth'readed reduced portion 39 (Fig.

5) extending through an aperture provided in the housing flange 13 to receive a securing nut 40 within the drum. The otherend of said arbor is formed integral with a block having a concave seating face 4:2 which is rigidly held against the housing 12 by means of a metal strap 43 andclamping bolts 44 and 45, as best shown in Fig. 3. Said sleeve is also provided with a second arm'G' which is connected by one or more links, such as 47, leading from suitable operating .means (not shown) adapted to be actuated by the driver of the vehicle which theinvention is applied. 7

The manner of assembling and securing the various above described parts in their respective places will, it is thought, be undcrstood from the drawings and the foreoing description.

noinical construction and is adapted to be readily secured to the structure of an automobile to atlord an eflicient support for brake devices of greater eficiency than those included in the standard equipment of that type of vehicles. The spring 83 cooperates with spring 22 to normally retain the brakeband in its inoperative relation with respect to the brake-drum. When the oper sting link is actuated by a pedal or hand lever, the armsr lfi and 36 are swung forwardly to transmit power through link 35 and bell-crank lever 272'2 to cause the brake-band 21 to embrace the drum in op- L position to the spring 33 for the purpose of etarding'or interrupting the rotation of the a ociated vehicle wheel.

"What I claim, is,- i i. an apparatus of the character described, the combination with a vehicle wheel, a brake drum rigidly secured thereto, an axle for said Wheel, an axle housing provided with a circular flange element, a brake band, a bell crank lever connected to one end. of said brake band and a screw threaded rod connecting said bell crank lever to the other end of the brake band, of a bracket "bar rigidly secured to the housing flange at substantially diametrically opposed sides of the brake drum, the opposite ends of said bar respectively serving as a support for the brake band and as a guide for said rod, a nut'provided on said rod to the frame work thus produced is of eco-r limit the separation of the brake band ends with respect to each other, a spring interposed between the rod'gulding end of said bar and the brake band, an arbor secured having a housing for the wheel aXle, a brake drum secured to the vehicle wheel, a brake band, means secured to said housing for supporting said brake band and a bellcrank lever connected to one end of thebrake band, an adjustable arm for connecting theiother end of the brake band to said bell crank lever, of an arbor secured to the axlehousmg, a sleeve mounted on said arbor andprovided with an arm, alink making connection between said arm and one end of the bell crank lever, and a second arm mounted on the sleeve and manually operable connections to said second arm for imparting a rotary motion to said sleeve for actuating the brake band through the medium of said link and the bell crank lever,

Signed at Seattle, Vashingtori, this 8th day of February, 1921.

JOHN W. BAILEY. Witnesses PIERRE BARNES, MARG RET G. SUrrLn. 

